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I have an issue on simple products with option. When selected the option the price not update.

I need help to solve it.

This is my options.phtml :

 <?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magento.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magento.com for more information.
 *
 * @category design
 * @package base_default
 * @copyright Copyright (c) 2006-2016 X.commerce, Inc. and affiliates (http://www.magento.com)
 * @license http://opensource.org/licenses/afl-3.0.php Academic Free License (AFL 3.0)
 */
/* @var $this Mage_Catalog_Block_Product_View_Options */
?>

<?php $_options = Mage::helper('core')->decorateArray($this->getOptions()) ?>
<?php if (count($_options)):?>
 <script type="text/javascript">
 //<![CDATA[
 var optionFileUpload = 
 productForm : $('product_addtocart_form'),
 formAction : '',
 formElements : ,
 upload : function(element)
 this.formElements = this.productForm.select('input', 'select', 'textarea', 'button');
 this.removeRequire(element.readAttribute('id').sub('option_', ''));

 template = '<iframe id="upload_target" name="upload_target" style="width:0; height:0; border:0;"></iframe>';

 Element.insert($('option_'+element.readAttribute('id').sub('option_', '')+'_uploaded_file'), after: template);

 this.formAction = this.productForm.action;

 var baseUrl = '<?php echo $this->getUrl('*/product/upload') ?>';
 var urlExt = 'option_id/'+element.readAttribute('id').sub('option_', '');

 this.productForm.action = parseSidUrl(baseUrl, urlExt);
 this.productForm.target = 'upload_target';
 this.productForm.submit();
 this.productForm.target = '';
 this.productForm.action = this.formAction;
 ,
 removeRequire : function(skipElementId)
 for(var i=0; i<this.formElements.length; i++)
 if (this.formElements[i].readAttribute('id') != 'option_'+skipElementId+'_file' && this.formElements[i].type != 'button') 
 this.formElements[i].disabled='disabled';
 
 
 ,
 addRequire : function(skipElementId)
 for(var i=0; i<this.formElements.length; i++)
 if (this.formElements[i].readAttribute('name') != 'options_'+skipElementId+'_file' && this.formElements[i].type != 'button') 
 this.formElements[i].disabled='';
 
 
 ,
 uploadCallback : function(data)
 this.addRequire(data.optionId);
 $('upload_target').remove();

 if (data.error) 

 else 
 $('option_'+data.optionId+'_uploaded_file').value = data.fileName;
 $('option_'+data.optionId+'_file').value = '';
 $('option_'+data.optionId+'_file').hide();
 $('option_'+data.optionId+'').hide();
 template = '<div id="option_'+data.optionId+'_file_box"><a href="#"><img src="var/options/'+data.fileName+'" alt=""></a><a href="#" onclick="optionFileUpload.removeFile('+data.optionId+')" title="Remove file" />Remove file</a>';

 Element.insert($('option_'+data.optionId+'_uploaded_file'), after: template);
 
 ,
 removeFile : function(optionId)
 
 $('option_'+optionId+'_uploaded_file').value= '';
 $('option_'+optionId+'_file').show();
 $('option_'+optionId+'').show();

 $('option_'+optionId+'_file_box').remove();
 
 
 var optionTextCounter = 
 count : function(field,cntfield,maxlimit)
 if (field.value.length > maxlimit)
 field.value = field.value.substring(0, maxlimit);
 else 
 cntfield.innerHTML = maxlimit - field.value.length;
 
 
 

 Product.Options = Class.create();
 Product.Options.prototype = 
 initialize : function(config) 
 this.config = config;
 this.reloadPrice();
 document.observe("dom:loaded", this.reloadPrice.bind(this));
 ,
 reloadPrice : function() 
 var config = this.config;
 var skipIds = [];
 $$('body .product-custom-option').each(function(element)
 var optionId = 0;
 element.name.sub(/[0-9]+/, function(match)
 optionId = parseInt(match[0], 10);
 );
 if (config[optionId]) 
 );
 
 
 function validateOptionsCallback(elmId, result) 
 var container = $(elmId).up('ul.options-list');
 if (result == 'failed') 
 container.removeClassName('validation-passed');
 container.addClassName('validation-failed');
 else 
 container.removeClassName('validation-failed');
 container.addClassName('validation-passed');
 
 
 var opConfig = new Product.Options(<?php echo $this->getJsonConfig() ?>);
 //]]>
 </script>
 <dl>
 <?php foreach($_options as $_option): ?>
 <?php echo $this->getOptionHtml($_option) ?>
 <?php endforeach; ?>
 </dl>
<?php endif; ?>

I tryed this solution: price changes to zero after selecting an option in updated version
but not work becouse in my options.phtml file there isn't this line:

price += parseFloat(config[optionId][element.getValue()]);

app/design/frontend/theme_package/layout/catalog.xml

Place this code in this file

<catalog_product_view>
 <reference name="head">
 <action method="addJs"><script>varien/product.js</script></action>
 <action method="addJs"><script>varien/product_options.js</script></action>
 <action method="addJs"><script>varien/configurable.js</script></action>
 </reference>
 </catalog_product_view>